WO2019001528A1

WO2019001528A1 - Vehicle and vehicle body structure thereof

Info

Publication number: WO2019001528A1
Application number: PCT/CN2018/093437
Authority: WO
Inventors: 廉玉波; 衣本钢; 嵇明; 刘新春; 卢淑珍
Original assignee: 比亚迪股份有限公司
Priority date: 2017-06-30
Filing date: 2018-06-28
Publication date: 2019-01-03
Also published as: CN109204528A; CN109204528B

Abstract

A vehicle body structure of a vehicle, comprising rear longerons (120); the rear longerons (120) comprise a first section (I), a second section (II), and a third section (III) in order from rear to front; the second section (II) corresponds in the lateral direction of the vehicle to an electronic control device, the strength of the second section (II) being greater than the strength of the first section (I), and also being greater than the strength of the third section (III). Further provided is a vehicle comprising the described vehicle body structure; the vehicle body structure may better protect the electronic control device when the vehicle experiences a rear collision.

Description

Vehicle and its body structure

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 30, 2017, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to a vehicle body structure, and to a vehicle having the vehicle body structure.

Background technique

Minimizing occupant mortality and injury levels in vehicles, especially passenger car traffic (collision) accidents, is the core design technique for vehicle development and manufacturing. Among them, the design of the collision safety deformation structure of the vehicle body structure is the basis for improving the safety performance of the vehicle collision. In order to meet the public's requirements for the increasing collision safety of household passenger vehicles, in recent years, relevant departments of various countries have gradually improved and supplemented the collision safety of some passenger vehicles in relevant national regulations and evaluation specifications. Test conditions for performance. For example, the United States is updating a series of regulations and evaluation specifications for safety collision performance for vehicles sold in its domestic market, requiring the body member cabin to withstand greater collision forces and relatively small deformation under more conditions.

With the popularity of household passenger vehicles in the global market, the shortage of petrochemical energy and the environmental problems caused by burning are becoming more and more serious, so countries are actively developing new energy vehicles. The direction of electric vehicles as a new energy vehicle is becoming a trend in the future. In addition to meeting the traditional design, the design of electric vehicles also needs to consider designing high cruising range to meet the competitiveness of traditional fuel vehicles.

In order to improve the cruising range, electric vehicles need to be equipped with more energy storage batteries, so that the weight of the electric vehicle will increase significantly compared with the fuel vehicle of the same specification, which leads to the initial collision of the vehicle under the same test conditions. The increase in vehicle kinetic energy means that the body structure of an electric car needs to be able to bear more force and absorb more kinetic energy to improve safety. Further, in the electric vehicle, since the energy storage battery pack needs to be arranged, a large amount of space in the lower part of the vehicle body is occupied, and various classic body collision safety structure technologies of the conventional fuel vehicle cannot be used, so that an energy storage battery can be designed. It is imperative to arrange a new body structure technology that can meet the safety of vehicles.

Summary of the invention

It is an object of the present disclosure to provide a vehicle body structure that is capable of better protecting an electronic control device in the event of a rear collision of the vehicle.

In order to achieve the above object, the present disclosure provides a vehicle body structure of a vehicle, the vehicle including an electric control device, the vehicle body structure including a rear side member, the rear side member including a first section, a second portion from the rear to the front in order a section and a third section, the second section corresponding to the electronic control device in a lateral direction of the vehicle, the strength of the second section being greater than the intensity of the first section, and greater than The strength of the third section.

In the vehicle body structure of the present disclosure, since the strength of the second section is greater than the strength of the first section and the third section, when a rear collision occurs in the vehicle, compared to the first section and the third section, The second section is deformed later or not deformed (in the case of a small collision force), so that the electronic control device corresponding to the lateral direction of the second section is deformed or not deformed later to protect the electronic control device, thus enabling The electronic control device has sufficient time to control the battery pack to be powered off, so as to avoid the risk of fire or even explosion when the battery pack is squeezed.

The present disclosure also provides a vehicle including an electronic control device and a vehicle body structure as described above.

Other features and advantages of the present disclosure will be described in detail in the detailed description which follows.

DRAWINGS

The drawings are intended to provide a further understanding of the disclosure, and are in the In the drawing:

1 is a partial exploded view of a vehicle body structure in accordance with an embodiment of the present disclosure.

2 is a perspective view of a rear section of a rear side member in a vehicle body structure in accordance with an embodiment of the present disclosure.

3 is a top plan view of a vehicle body structure in accordance with an embodiment of the present disclosure.

4 is a bottom view of a vehicle body structure in accordance with an embodiment of the present disclosure.

Figure 5 is a cross-sectional view taken along line E-E of Figure 4;

Figure 6 is an enlarged view of a portion G in Figure 5.

Fig. 7 is a sectional view taken along line F-F of Fig. 4;

Figure 8 is an enlarged view of a portion H of Figure 7.

9 is a partial exploded view of a vehicle body structure in accordance with an embodiment of the present disclosure.

10 is a side view of a vehicle body structure in accordance with an embodiment of the present disclosure.

11 is a front elevational view of a motor impact beam in a vehicle body structure in accordance with an embodiment of the present disclosure.

12 is a perspective view of a vehicle body structure in accordance with an embodiment of the present disclosure.

13 is a side view of a vehicle body structure in accordance with an embodiment of the present disclosure.

14 is a perspective view of a guide beam and a front mounting beam in a vehicle body structure in accordance with an embodiment of the present disclosure.

15 is a side view of a vehicle body structure in accordance with an embodiment of the present disclosure.

16 is a partial exploded view of a vehicle body structure in accordance with an embodiment of the present disclosure.

Detailed ways

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are not to be construed

In the present disclosure, the orientation words used, such as "up, down, left, right, front, and rear", are defined on the basis of the up and down direction, the left and right direction, and the front and rear direction of the vehicle, unless otherwise stated. Specifically, in the drawing, the X direction is the front and rear direction of the vehicle, that is, the longitudinal direction of the vehicle, wherein the side pointed by the arrow is “front”, and vice versa is “rear”; the Y direction is the left and right direction of the vehicle, that is, the vehicle Lateral, wherein the side pointed by the arrow is "right", and vice versa is "left"; the Z direction is the up and down direction of the vehicle, that is, the height direction of the vehicle, wherein the side pointed by the arrow is "up" and vice versa "Inside and outside" are defined based on the contours of the corresponding components, such as the interior and exterior of the vehicle, which are defined on the basis of the vehicle's contour, and the inner side near the center of the vehicle is "inside" and vice versa. The above definitions are only used to assist the description of the disclosure, and should not be construed as limiting the disclosure.

All "beams" in this disclosure refer to beams that extend generally in the left and right direction of the vehicle, and all "stringers" refer to beams that extend generally in the fore and aft direction of the vehicle. Further, the terms "floor panel", "back stringer", "back bumper beam" and the like referred to in the various embodiments of the present disclosure have their meanings well-known in the art without any other specific explanation.

In addition, the terms "connected", "connected", "fixed", and the like, are to be understood broadly, and may be in a non-removable manner such as welding, a detachable manner such as a bolt, or the like, unless otherwise explicitly stated and defined. The system is realized in a one-piece manner.

A vehicle body structure of a vehicle according to an embodiment of the present disclosure will be described below with reference to FIGS.

According to an aspect of the present disclosure, a vehicle body structure is provided, as shown in FIGS. 3 and 4, including a rear anti-collision beam 270, a floor panel 300, and two rear side members 120 spaced apart in the left-right direction, and a rear anti-collision beam The two ends of the 270 are respectively connected to the rear ends of the two rear side members 120, and the floor panel 300 has an electric control device mounting area for mounting the electric control device 740 and a rear seat (not shown) for mounting. In the rear seat mounting area, the electronic control unit mounting area is located rearward of the rear seat mounting area and spaced apart from the rear seat mounting area. The electronic control unit 740 can be used to control the battery pack to be energized and de-energized. The rear side member 120 may include a first section I, a second section II, a third section III, and a fourth section IV in order from the rear to the front, wherein the second section II is in the lateral direction of the vehicle and the floor panel The electronic control device mounting area of 300 corresponds to the electronic control device 740 corresponding to the lateral direction of the vehicle, that is, the distance between the electronic control device 740 and the front end of the vehicle and the distance between the second segment II and the front end of the vehicle. Substantially equal, the intensity of the second section II is greater than the intensity of the first section I and greater than the intensity of the third section III.

In the vehicle body structure of the present disclosure, since the strength of the second section II is greater than the strengths of the first section I and the third section III, when the vehicle collides, compared to the first section I and the third Section III, the second section II is deformed later or not deformed (in the case of a small collision force), so that the electronic control device 740 corresponding to the second section II is deformed later or not deformed to protect the electricity. The control device 740 can enable the electronic control unit 740 to have sufficient time to control the battery pack 600 to be powered off, thereby avoiding the risk of fire or even explosion when the battery pack 600 is squeezed.

In an embodiment, the strength of the third section III may be greater than the intensity of the first section I, that is, the intensity of the first section I is the smallest, the third section III is second, and the second section II is The strength is the greatest. In this case, when a rear collision occurs in the vehicle, if the collision force is small, only the first section I is deformed; if the collision force is large, the first section I is first deformed, and then the third section III is deformed. If the collision force is too large, the first section I is first deformed, and then the third section III is deformed, and finally the second section II is deformed.

In an embodiment, the interface PP of the third section III and the fourth section IV may be located behind the rear seat mounting area of the floor panel 300, ie, the rear seat is located in the fourth section IV in the vehicle transverse direction. Within the corresponding range, and the intensity of the fourth segment IV may be greater than the intensity of the third segment III. Further, the intensity of the fourth segment IV may be greater than the intensity of the second segment II. By designing the fourth section IV to have a large strength, the fourth section IV is not easily deformed in the event of a rear collision of the vehicle, thereby ensuring the safety of the rear occupant. At the same time, the strength of the fourth section IV is improved by connecting the rear seat mounting beam to the fourth section IV.

In an embodiment, the vehicle body structure may further include a battery pack rear mounting beam 230 (visible in FIG. 12), the battery pack 600 is disposed under the floor panel 300 and located in front of the motor 730, and the motor 730 may pass through the sub-car A frame (not shown) is mounted on the rear side member 120. The battery pack rear mounting beam 230 is disposed under the floor panel 300, and the two ends of the battery pack rear mounting rail 230 are respectively connected to the left and right rear side rails 120, and the battery pack rear mounting beam 230 is spaced apart in the left-right direction. Two battery tray mounting brackets 340, the battery tray mounting bracket 340 extends downward from the battery pack rear mounting rail 230, and the rear end of the battery pack 600 battery pack is mounted on the two battery tray mounting brackets 340.

The interface P-P of the third section III and the fourth section IV may be located behind the battery pack rear mounting rail 230, that is, the battery pack rear mounting rail 230 is coupled to the fourth section IV of the rear side rail 120. By designing the fourth section IV to have a large strength, the fourth section IV is not easily deformed when a rear collision occurs in the vehicle, thereby ensuring the safety of the battery pack. At the same time, the strength of the fourth section IV is improved by connecting the underfloor beam 280 on the fourth section IV.

More specifically, in an embodiment, as shown in FIGS. 1 and 4, the vehicle body structure may further include an underfloor beam 280 disposed on a lower surface of the floor panel 300 and located on the floor back beam. At the rear of the 230, the two ends of the underfloor beam 280 are connected to the rear side members 120 on the left and right sides one by one. The underfloor beam 280 serves as a beam forming a body frame which can increase the strength and rigidity of the body. The underfloor beam 280 may be disposed at a concave point of the rear side member 120 for preventing bending deformation at the concave point.

In one embodiment, as shown in FIG. 4, the rear edge of the underfloor beam 280 may be located on the interface P-P of the third section III and the fourth section IV. In other words, the underfloor beam 280 is coupled to the rear end of the fourth section IV. The strength of the fourth section IV is improved by connecting the underfloor beam 280.

As shown in FIGS. 1 and 3, an upper floor cross member 290 corresponding to the position of the underfloor cross member 280 may be disposed above the floor panel 300, and the floor upper cross member 290, the floor panel 300, and the underfloor cross member 280 are coupled together. In this case, the third section III may correspond to the area of the floor panel 300 between the floor upper cross member 290 and the electric control device mounting area in the lateral direction of the vehicle.

The battery pack rear mounting beam 230, the underfloor cross member 280 and the two rear side members 120 enclose a closed loop frame structure, which can increase the strength of the vehicle body structure and improve the stability of the vehicle body structure. In the event of a side collision of the vehicle, the battery pack rear mounting beam 230 and the underfloor beam 280 can transmit the collision force directly from the one side rear side member 120 to the other side rear side member 120, such that the floor panel 300 does not substantially participate or Less involvement in the collision force and energy absorption can limit the lateral deformation of the floor panel 300 and the rear side member 120.

In the present disclosure, the rear side member 120 may have any suitable structure as long as the strength relationship of each of the sections satisfies the above requirements.

In one embodiment, as shown in FIG. 1, the rear side member 120 may include a rear side rail front section 121 and a rear side rail rear section 122 that are connected to each other, and the underfloor cross member 280 and the floor rear cross member 230 may be coupled to the rear side member. In the front section 121, the rear longitudinal beam rear section 122 is provided with a rear longitudinal beam rear section reinforcement structure and a rear longitudinal beam rear section weakening structure, the rear longitudinal beam rear section weakening structure is located in the first section I, and the rear longitudinal beam rear section reinforcement structure is located. Second section II.

As shown in FIG. 2, the rear side member rear section weakening structure may be a crushing rib 1223 and/or a crushing hole provided on the rear side member rear section 122.

As shown in FIG. 2, the rear section of the rear side member 122 has an upwardly open groove-like structure, and includes a rear section bottom wall 1221 and two rear section side walls 1222. The two rear section side walls 1222 are oppositely disposed, and then The segment bottom wall 1221 connects the two rear side walls 1222.

As shown in FIG. 1, FIG. 6, and FIG. 7, the rear side member rear section reinforcing structure may include a rear side member rear section reinforcing plate 125 disposed inside the rear side member rear section 122, and a rear side member rear section reinforcing plate 125. The front end extends to the interface MM of the second section II and the first section I, and the rear end of the rear side rail reinforcement panel 125 extends to the interface NN of the second section II and the third section III. The second section II can be reinforced by providing the rear side member rear section reinforcing plate 125.

The rear side member rear section reinforcing plate 125 can be directly attached to the rear stage bottom wall 1221. In an embodiment, as shown in FIG. 7 , the rear side member rear section reinforcing plate 125 may be spaced apart from the rear stage bottom wall 1221 , and the rear side beam rear section reinforcing structure may further include a rear side bottom wall 1221 . Rear sill

rear slabs

126A, 126B between rear sill rear stiffeners 125, rear stern rear stiffeners are joined to rear sill rear section 122 by rear sill

rear slabs

126A, 126B. The rear side member rear side stays 126A, 126B may be one or plural. In the illustrated embodiment, the rear rail

rear leg slabs

126A, 126B include a front strut 126A and a rear strut 126B. The front struts 126A are in the shape of "several" for supporting the front and middle portions of the rear side slab rear reinforcing plate 125; the rear struts 126B are in a "Z" shape for supporting the rear side sill rear reinforcing plate 125 unit.

In one embodiment, the front end of the rear side member rear section 122 may extend to the interface NN of the second section II and the third section III, that is, the front end of the rear side member rear section 122 and the rear side member The front end of the rear section reinforcing plate 125 is flush, and the length of the rear side member rear section 122 is equal to the sum of the lengths of the first section I and the second section II.

The rear longitudinal beam front section 121 may be provided with a rear longitudinal beam front section rear reinforcing plate 124, and the rear longitudinal beam front section rear reinforcing plate 124 may be disposed at a joint of the rear longitudinal beam front section 121 and the rear longitudinal beam rear section 122. By providing the rear longitudinal beam front section rear reinforcing plate 124, the strength of the joint between the rear longitudinal beam front section 121 and the rear longitudinal beam rear section 122 can be improved, and the joint of the rear longitudinal beam front section 121 and the rear longitudinal beam rear section 122 can be prevented from being broken or deformed. It is beneficial to transmit the collision force backwards or forwards in the event of a frontal collision or a rear collision of the vehicle, thereby improving the collision safety of the vehicle.

Further, the rear longitudinal beam front section 121 may further be provided with a reinforcing plate 123 in the front side of the rear longitudinal beam, a part of the reinforcing plate 123 in the front section of the rear longitudinal beam is located in the third section III, and the other part is located in the fourth section IV. By providing the reinforcing plate 123 in the front section of the rear longitudinal beam, the entire third section III and the part of the fourth section IV can be reinforced such that the strength of the third section III is greater than the strength of the first section IV, thereby facilitating control to occur. The sequence of crushing of each segment of the rear longitudinal beam at the time of rear collision.

In one embodiment, the cross-sectional area of the fourth section IV may be greater than the cross-sectional area of the other sections such that the intensity of the fourth section IV is greater than the other sections. In other embodiments, a reinforcing structure (such as a stiffener or rib) may also be provided on the fourth section IV to increase the strength of the fourth section IV to be greater than the other sections.

In order to protect the motor 730 in the event of a rear collision or reverse of the vehicle, in one embodiment, as shown in FIGS. 9 and 10, the vehicle body structure may further include a motor impact beam 440, the two ends of the motor impact beam 440 being respectively One-to-one correspondence is connected to the two rear side members 120, and the motor impact beam 440 is at least partially lower than the rear side member 120, that is, the motor impact beam 440 is at least partially located below the rear side member 120, and the motor anti-collision beam 440 is located on the floor. Below the panel 300 and behind the motor 730.

By providing the motor impact beam 440 behind the motor 730, on the one hand, the motor impact beam 440 can prevent the rear vehicle from directly hitting the motor 730 when the rear collision occurs, effectively protecting the motor 730; on the other hand, when reversing The motor impact beam 440 can prevent ground obstacles (eg, road steps, ground piles, etc.) from invading the motor 730, further protecting the motor 730.

Since the two ends of the motor impact beam 440 are respectively connected to the left and right rear side members 120 in a one-to-one correspondence, the motor impact beam 440 can form a lateral support between the two rear side members 120 when a side collision occurs in the vehicle. The lateral deformation of the rear side member 120 and the floor panel 300 is reduced.

Both ends of the motor impact beam 440 can be attached to any suitable location of the rear side member 120. In one embodiment, both ends of the motor impact beam 440 may be coupled to the second section II of the rear side member 120, that is, the motor impact beam 440 may be disposed directly below the electronic control unit 740. In this way, the strength of the second section II can be enhanced.

The motor impact beam 440 can have any suitable structure and shape. In one embodiment, as shown in FIG. 11, the motor impact beam 440 can include a body section 441 and two connecting sections 442 that extend horizontally, each connecting section 442 being generally inclined upward from one end of the body section 441. Extending to connect to the rear side member 120. Specifically, as shown in FIG. 3, the main body segment 441 may have a "one" shape, and the connecting portion 442 may have a substantially "Z" shape. In this way, the height of the motor impact beam 440 is made lower, thereby better protecting the motor 730. In one embodiment, the lowest point of the motor impact beam 440 may be lower than the lowest point of the motor 730 to better prevent ground obstacles from invading the motor 730 when reversing.

In order to prevent the motor 730 from moving forward and hitting the battery pack 600 when a rear collision occurs in the vehicle, in one embodiment, a battery pack anti-collision structure is disposed between the battery pack 600 and the motor 730, and the battery pack is used for the collision avoidance structure. Preventing the motor 730 from colliding with the battery pack 600 when a rear collision occurs in the vehicle, that is, when the rear collision of the vehicle causes the motor 730 to move forward (including the forward movement caused by the deformation of the rear side member 120 and the rear vehicle directly hitting the motor 730). When the forward movement is caused, the battery pack collision preventing structure can change the movement trajectory of the motor 730 to some extent, so that the motor 730 does not hit the battery pack 600.

The battery pack anti-collision structure can have various suitable structures. In one embodiment, the battery pack crash structure may include a guide beam 450 or a guide plate that is disposed obliquely in the front-rear direction, the guide beam 450 or the guide plate extending forward and downward, causing the motor 730 when a rear collision occurs in the vehicle. When moving forward, the motor 730 hits the guide beam 450 or the guide plate, and the guide beam 450 or the guide plate guide motor 730 moves downward while moving forward to avoid the battery pack 600. That is, when the rear collision of the vehicle causes the motor 730 to move forward, the battery pack anti-collision structure can change the movement trajectory of the motor 730 to some extent, so that the motor 730 moves downward to avoid the battery located in front of the motor 730. The package 600 prevents the battery pack 600 from being impacted and squeezed.

The guide beam 450 or guide plate can be mounted to the rear side member 120 in a variety of ways. In one embodiment, as shown in FIGS. 12-14, in addition to the guide beam 450, the battery pack crash structure may further include a front mounting beam 460 and a rear mounting beam 470, the front mounting beam 460 being connected to the two batteries. The tray mounting bracket 340 has two ends of the rear mounting beam 470 connected to the rear side frame 120. The front end of the guiding beam 450 is connected to the front mounting beam 460, and the rear end of the guiding beam 450 is connected to the rear mounting beam 470. In this manner, the position of the front mounting beam 460 is made lower than the position of the rear mounting beam 470, thereby causing the guiding beam 450 to be tilted. When the motor 730 hits the guide beam 450, the guide beam 450 itself absorbs a portion of the energy and transfers a portion of the energy through the rear mounting beam 470 to the rear side member 120, passing another portion of the energy through the front mounting beam 460, the battery tray mounting bracket 340, and The floor rear cross member 230 is transmitted to the rear side member 120. In this embodiment, the battery pack anti-collision structure is formed as a "work"-shaped structure connected between the two rear side members 120, thereby further reinforcing the vehicle body structure and improving the collision safety of the vehicle.

The guide beam 450 can be a straight beam. Alternatively, as shown in Figure 14, the guide beam 450 is a bent beam and includes a first section 451 and a second section 452 coupled to the first section 451, the first section 451 being oriented from the rear mounting beam 470 Extending forwardly and downwardly, the second section 452 extends generally horizontally from the first section 451 to connect to the front mounting beam 460. In this manner, the distance between the guide beam 450 and the motor 730 is made closer, and the motor 730 can contact the guide beam 450 earlier, facilitating control of the direction of motion of the motor 730.

In another embodiment, as shown in FIG. 15, in addition to the guiding beam 450, the battery pack collision preventing structure may further include a front mounting beam 460, a rear mounting beam 470 and a support beam 480, and the front mounting beam 460 is connected to the Two battery tray mounting brackets 340 are described. The two ends of the rear mounting beam 470 are connected to the rear longitudinal beam 120. The rear end of the guiding beam 450 is connected to the rear mounting beam 470. The supporting beam 480 extends substantially in the front-rear direction, and the supporting beam 480 The front end is connected to the front mounting beam 460, and the rear end of the support beam 480 is connected to the middle of the guiding beam 450. When the motor 730 hits the guide beam 450, the guide beam 450 itself absorbs a portion of the energy and transfers a portion of the energy to the rear side member 120 via the rear mounting beam 470, and another portion of the energy through the support beam 480, the front mounting beam 460, and the battery tray. The mounting bracket 340 and the battery pack rear mounting beam 230 are transmitted to the rear side member 120. In such an embodiment, the lower end position of the guide beam 450 may be allowed to be lower (eg, flush with the lower surface of the battery pack or lower than the lower surface of the battery pack), further eliminating the risk of the motor 730 hitting the battery pack 600. .

In yet another embodiment, as shown in FIG. 16, in addition to the guide beam 450, the battery pack crash structure further includes a front mounting beam 460, a rear mounting beam 470, and a mounting stringer 490, the front mounting beam 460 being connected For the two battery tray mounting brackets 340, the two ends of the rear mounting beam 470 are connected to the rear side frame 120, the front end of the mounting stringer 490 is connected to the battery pack rear mounting beam 230, and the rear end of the mounting stringer 490 is connected to the rear side. The beam 470 is mounted, the front end of the guiding beam 450 is connected to the front mounting beam 460, the rear end of the guiding beam 450 is connected to the middle of the mounting stringer 490, and the projection of the guiding beam 450 on the floor panel 300 and the mounting stringer 490 are The projections on the floor panel 300 coincide. When the motor 730 hits the guide beam 450, the guide beam 450 itself absorbs a portion of the energy and transfers a portion of the energy through the mounting stringer 490 to the rear stringer 120 and the battery pack rear mounting beam 230, passing another portion of the energy through the front mounting beam 460. The battery tray mounting bracket 340 and the battery pack rear mounting beam 230 are transmitted to the rear side member 120. In this embodiment, on the one hand, the battery pack rear mounting beam 230, the mounting stringer 490 and the rear mounting beam 470 form an "I" shape structure to enhance the vehicle body structure and improve the collision safety of the vehicle; The angle between the 450 and the mounting stringer 490 can further enhance the body structure and improve the stability of the body structure.

Here, the rear mounting beam 470 may be a beam inherent to the body structure or a beam separately provided for mounting the guiding beam. In one embodiment, the rear mounting cross member 470 can be, for example, the underfloor cross member 280 mentioned above.

Unlike the above-described embodiment in which the guide beam or the guide plate guide motor 730 is moved, in an alternative embodiment, the battery pack crash structure may include a stop beam or a stop plate, the stop beam or stop plate being connected to The rear side member 120 is disposed between the battery pack 600 and the motor 730 for blocking the motor 730 from moving forward when a rear collision occurs in the electric vehicle. The stop beam can be generally "U" shaped.

Based on the above technical solution, the present disclosure also provides a vehicle including the vehicle body structure provided by the present disclosure, and therefore, the vehicle has all the advantages and benefits of the vehicle body structure provided by the present disclosure, in order to reduce unnecessary repetition. , will not repeat them here. In particular, the vehicle may be an electric vehicle such that the body structure is adapted to the installation of the battery pack.

The specific embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical idea of the present disclosure. These simple variations are all within the scope of the disclosure.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not be further described in various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made as long as it does not deviate from the idea of the present disclosure, and should also be regarded as the disclosure of the present disclosure.

Claims

A vehicle body structure of a vehicle, the vehicle comprising an electronic control device, wherein the vehicle body structure comprises:

a rear side member, the rear side member includes a first section, a second section and a third section in order from the rear to the front, the second section corresponding to the electronic control device in a lateral direction of the vehicle The strength of the second section is greater than the strength of the first section and greater than the strength of the third section.
The vehicle body structure of claim 1 wherein the strength of the third section is greater than the strength of the first section.
The vehicle body structure according to claim 2, wherein the vehicle body structure further comprises a rear seat mounting beam, an end of the rear seat mounting beam is coupled to the rear longitudinal beam, and the rear longitudinal beam is further Included in a fourth section in front of the third section, the intensity of the fourth section is greater than the intensity of the third section, and the interface of the third section and the fourth section is located in the The rear seat is mounted behind the beam.
The vehicle body structure according to claim 2, wherein the vehicle body structure further comprises a battery pack rear mounting beam, the battery pack rear mounting beam is disposed under the floor panel, and the battery pack is mounted behind the beam. An end portion is coupled to the rear side member, the rear side member further includes a fourth portion located in front of the third portion, the strength of the fourth portion being greater than the strength of the third portion, The interface between the third section and the fourth section is located behind the battery pack rear mounting beam.
The vehicle body structure according to claim 4, wherein the vehicle body structure further comprises an underfloor beam, an end of the underfloor beam is coupled to the rear longitudinal beam, and the underfloor beam is located at the floor panel Below and behind the mounting beam of the battery pack, the rear edge of the underfloor beam is located at the interface of the third section and the fourth section.
The vehicle body structure according to claim 3 or 4, wherein the rear side member includes a rear side rail front section and a rear side rail rear section which are connected to each other, and the rear side member is provided with a rear side member rear side section The segment reinforcing structure and the rear side member rear section weakening structure, the rear side member rear section weakening structure is located in the first section, and the rear side beam rear section reinforcing structure is located in the second section.
The vehicle body structure according to claim 6, wherein the rear side member rear section weakening structure comprises a crushing rib and/or a crushing hole.
The vehicle body structure according to claim 6 or 7, wherein the rear side member rear section is formed as an upwardly open groove-like structure, and includes a rear section bottom wall and two oppositely disposed rear side walls. The rear longitudinal beam rear reinforcement structure comprises a rear longitudinal beam rear section reinforcement panel and a rear longitudinal beam rear section reinforcement panel, and the rear longitudinal beam rear section reinforcement panel is disposed inside the rear section of the rear longitudinal beam and is rearward Parallel bottom walls are parallel, a front end of the rear side member rear section reinforcing plate extends to an interface of the second section and the third section, and a rear end of the rear side member rear section reinforcing plate extends to the first The interface between the second section and the first section, the rear side member rear section strut is supported between the rear side member rear section and the rear section bottom wall.
The vehicle body structure according to any one of claims 6 to 8, characterized in that the rear longitudinal beam front section and the rear side rail rear section are provided with a rear side rail front section rear reinforcing plate.
The vehicle body structure according to any one of claims 6-9, wherein the front side member of the rear side member is provided with a reinforcing plate in the front side of the rear side member, and the front end of the reinforcing plate in the front side of the rear side member is located at the front side of the rear side member. In the fourth section, the rear end of the reinforcing plate in the front side of the rear side member extends to the interface of the second and third sections.
A vehicle body structure according to any one of claims 3 to 10, wherein the cross-sectional area of the fourth section is larger than the cross-sectional area of the other sections.
A vehicle comprising an electronic control device, characterized in that the vehicle further comprises a vehicle body structure according to any one of claims 1-11.
The vehicle of claim 12 wherein said vehicle further comprises a floor panel, said electronic control unit being mounted on said floor panel.
The vehicle according to claim 13, wherein the vehicle further comprises a battery pack, the battery pack is disposed under the floor panel, and the electronic control device is configured to control the battery pack to be powered on and off .